<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Three novel and distinct agricultural waste materials, viz., Casuarinas fruit powder (CFP), sorghum stem powder (SSP) and banana stem powder (BSP) were used as low cost adsorbents for the removal of toxic copper(II) from aqueous solutions. Acid treated adsorbents were characterized by SEM, EDX and FTIR. Different factors effecting adsorption capacity were analyzed and the efficiency order was BSP>SSP>CFP. Based on the extent of compatibility to Freundlich/Langmuir/D-R/Temkin adsorption isotherm and different models (pseudo-first and second order, Boyd, Weber’s and Elovich), chemisorption primarily involved in the case of CFP and SSP, whereas, simultaneous occurrence of chemisorption and physisorption was proposed in the case of BSP. Based on the observations, it was proposed that three kinetic stages involve in adsorption process viz., diffusion of sorbate to sorbent, intra particle diffusion and then establishment of equilibrium. These adsorbents have promising role towards removal of Cu(II) from industrial wastewater to contribute environmental protection.</p></abstract>

Three novel and distinct agricultural waste materials, viz., Casuarinas fruit powder (CFP), sorghum stem powder (SSP) and banana stem powder (BSP) were used as low cost adsorbents for the removal of toxic copper(II) from aqueous solutions. Acid treated adsorbents were characterized by SEM, EDX and FTIR. Different factors effecting adsorption capacity were analyzed and the efficiency order was BSP>SSP>CFP. Based on the extent of compatibility to Freundlich/Langmuir/D-R/Temkin adsorption isotherm and different models (pseudo-first and second order, Boyd, Weber’s and Elovich), chemisorption primarily involved in the case of CFP and SSP, whereas, simultaneous occurrence of chemisorption and physisorption was proposed in the case of BSP. Based on the observations, it was proposed that three kinetic stages involve in adsorption process viz., diffusion of sorbate to sorbent, intra particle diffusion and then establishment of equilibrium. These adsorbents have promising role towards removal of Cu(II) from industrial wastewater to contribute environmental protection.

Kinetic, isotherm and thermodynamics investigation on adsorption of divalent copper using agro-waste biomaterials, <italic>Musa acuminata</italic>, <italic>Casuarina equisetifolia</italic> L. and <italic>Sorghum bicolor</italic>

Acharya Nagarjuna University, Department of Chemistry, ANUCET, Guntur – 522510, India

Acharya Nagarjuna University, Department of Biotechnology, Guntur – 522510, India

GITAM University – Bengaluru, Karnataka – 561203, India

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Kinetic, isotherm and thermodynamics investigation on adsorption of divalent copper using agro-waste biomaterials, ,  L. and 

Three novel and distinct agricultural waste materials, viz., Casuarinas fruit powder (CFP), sorghum stem powder (SSP) and banana stem powder (BSP) were used as...

Kinetic, isotherm and thermodynamics investigation on adsorption of divalent copper using agro-waste biomaterials, Musa acuminata, Casuarina equisetifolia L. and Sorghum bicolor

Published Online: Jun 30, 2016

Page range: 68 - 77

DOI: https://doi.org/10.1515/pjct-2016-0031

Keywords
banana bunch-stem powder, casuarinas fruit powder, sorghum stem powder, removal, copper, adsorption

© 2016 Ramya Prasanthi Mokkapati et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Kinetic, isotherm and thermodynamics investigation on adsorption of divalent copper using agro-waste biomaterials, Musa acuminata, Casuarina equisetifolia L. and Sorghum bicolor

Published Online: Jun 30, 2016

Page range: 68 - 77

DOI: https://doi.org/10.1515/pjct-2016-0031

Keywordsbanana bunch-stem powder, casuarinas fruit powder, sorghum stem powder, removal, copper, adsorption

© 2016 Ramya Prasanthi Mokkapati et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
banana bunch-stem powder, casuarinas fruit powder, sorghum stem powder, removal, copper, adsorption